Pulpal irritation

It is interesting to study the polymerization of functional monomer containing an amino group, so-called polymerizable amine by peroxide initiator, which could be anticipated to cause less pulpal irritation and toxic... 

Post-operative sensitivity has occasionally been reported when the glass-ionomer cement has been used as a luting agent. This observation is more than anecdotal, but the reason for it is unknown. It is not connected with pulpal irritation but may be related to hydraulic pressures (Pameijer Stanley, 1988). The indication is that sensitivity is related to clinical technique and is exacerbated if certain slow-setting glass-ionomer cements are used, especially if they are mixed too thinly. 

There are other causes of pain and pulpal irritation. Hydraulic pressure developed during the seating of a restoration can lead to pulpal damage (Hoard et al., 1978). The movement of fluid under osmotic pressure has been dted as a cause of pain (Brannstrom Astrom, 1972). 

Another biological disadvantage is that dental silicate cement does not bond to tooth material, and harmful substances and bacteria can percolate between it and the tooth, giving rise to secondary caries and pulpal irritation (Going, Massler Dute, 1960). These effects are magnified when dissolution of the cement occurs. 

Johnson, R. H., Christensen, G. J., Stigers, R. W. Laswell, H. R. (1970). Pulpal irritation due to the phosphoric acid component of silicate cement. 

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